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Sift

AI-driven real-time fraud prevention for e-commerce

Overview

Sift builds a Digital Trust & Safety platform that helps e-commerce and fintech companies prevent fraud while keeping legitimate customers moving. It uses machine learning and AI to analyze vast streams of data in real time, delivering risk scores and decisions that integrate with clients’ existing systems. The platform provides dynamic friction—allowing valid transactions to proceed smoothly while stopping fraudulent ones—and it scales across small online retailers to large financial institutions. Revenue comes from a subscription model plus consulting and custom integration services. Sift’s goal is to reduce chargebacks and account takeovers, protect customer trust, and support safe digital commerce at scale, by delivering precise, real-time fraud prevention without disrupting normal user experiences.

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About Sift

Simplify's Rating
Why Sift is rated
B
Rated A on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & AnalyticsFintechCybersecurityAI & Machine Learning

Company Size

201-500

Company Stage

Series E

Total Funding

$156.7M

Headquarters

San Francisco, CA

Founded

2011

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Simplify's take

What believers are saying

  • Sift launched the Fraud Attack Defense Suite on October 26, 2026.
  • Attack Detection Agent is live now, with 700-plus brands already on the platform.
  • The May 2026 Attane Health acquisition expands product reach beyond pure fraud prevention.

What critics are saying

  • Sift still keeps humans making the final call, delaying full automation against faster rivals.
  • The attack suite stays foundational today, so promised response automation slips into 2027.
  • Fraud detection is a feature battle; Stripe, Adyen, and identity vendors can bundle it away.

What makes Sift unique

  • Sift processes over 1 trillion annual events across 34,000 sites and apps.
  • Its Fraud Attack Defense Suite groups detection, investigation, and response into one workflow.
  • Sub-150 ms decisioning plus a global data network creates hard-to-replicate signal density.

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Funding

Total Funding

$156.7M

Below

Industry Average

Funded Over

7 Rounds

Series E funding typically includes additional rounds after Series D if the company needs more capital. The business is usually stable, and these rounds are typically used for further expansion or to address market challenges.
Series E Funding Comparison
Below Average

Industry standards

$100M
$245M
$250M
$1.3B
$1.5B

Benefits

  • Flexible Work Hours

Growth & Insights and Company News

6 month growth

-1%

1 year growth

-2%

2 year growth

-2%
Associated Press
Oct 26th, 2026
Sift launches three-agent AI suite to detect, investigate and respond to fraud attacks

Sift, the fraud prevention platform serving more than 700 brands including Patreon, Turo, and Remitly, has launched the Fraud Attack Defense Suite. It is a system of three agents that detect, investigate, and respond to fraud attacks. Attack Detection Agent is generally available and included in the core platform, with no new integration. It learns each business's normal traffic patterns and alerts teams when activity breaks from them. In its first month, it caught a multi-hour 20x transaction spike at a travel customer and a 13-hour card-testing surge at a retail customer. The Investigation and Response agents are available at a basic level. Sift plans to add automated responses. "Attacks need a first responder, not a police report," said Raj Jain, chief product officer at Sift.

SpaceNews
Jun 25th, 2024
Sift raises $17.5M in Series A

Southern California startup Sift raised $17.5 million in a Series A funding round led by Google Ventures. Announced on June 25, the investment will help Sift expand its staff and accelerate the development of its platform, which aids engineers in analyzing hardware sensor data. Sift's automated data review product generates reports to highlight potential issues, benefiting industries like aviation, defense, energy, and transportation.

Globe Newswire
Nov 17th, 2021
Sift Acquires Passwordless Authentication Pioneer Keyless to Provide Regulated Businesses and Online Merchants with Secure, Frictionless Authentication

Biometric authentication innovator eliminates password-based account takeover and enables PSD2 Strong Customer Authentication while preserving user privacy

TechCrunch
Apr 22nd, 2021
Fraud prevention platform Sift raises $50M at over $1B valuation, eyes acquisitions

With the increase of digital transacting over the past year, cybercriminals have been having a field day.

PYMNTS
Oct 8th, 2020
The Ordering Innovations Attracting Restaurant Customers

This Deep Dive explores how restaurants are using innovative dining and ordering technology to satisfy customer needs amid the COVID-19 pandemic.

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